Cutting machine



p 9 3. R. H. NOBLE ET AL I 2,329,214

CUTTING MACHINE Filed July 8, 1942 Patented Sept; 14, 1943 aseu lann iecneo Y 7 lfimntcdaundcv the: act '0! March e e; v .7 l 'amendedzApirilim, 1928; 370 0. 7570 C T h e. invention described herein may em r factured and used by or for the. Government. for. o governmental purposes, without. the payment to us of'a ny royalty thereoimi, I l This inventionrelates to a machine. roe cuttin a plurality of slots or grooves in, shee.t'material" lsuch'as wood planks and the. like.

An fdlqj'ectiof'this invention is to adjustable for cutting spaced slots in planks.

Another object ofthis invention is to provide-a machine for cutting grooves on the faces-of planks for ammunition packing boxes and like V 7 provide ama- "chine having spaced rotating cutters whic h'are containers; 'Anotherobiec-t ofthi'sinventionis to provide a machine f-or cutting hinge cleanance slots; at approximately 45* on the. edges-of planks 01: .such containers; Still other objects and ad, vantages oi the: invention: will appear herein? after inthe following. detailed description? :a preferred embodiment as shown in the atcom? panying drawing in which; 1

v spacing of fsaid tools, andmeans vfor sllnporting work'to he. grooved Iormovement against. said tools. a: r Q'Refferring now to the drawing, a'bedl-Tinlthe i'ormflofan II-bearn, is the main. supportingmem 'ber'of. the machine. On top of thebed there is welded a suriaceiplate 2; Rails 3 arewel'dedto the edges of the plate: providing a channel"v 5 and 5a arepositioned for sliding movement "longitudiha'lly of the bed; Ascrevvfiihaving right of threads I and. 48 21. ,Tlui ihggthe screw inthe other direction-causes vars vmbveime itiof the heads; Alsplit collar; ill-prov. .e'd while-clamping'screw I2 surrounds the cnfil'fifli' hfljsplgwffi andiswmlded. to. the smjfece plate}; men the cutterlh adis have been set; theyiareilx d' in place by clampihg the. split collar with the c amping screw ther by Pr venting, station o thetscrew is. and movement oflthe, leans i i means is an electric motor geared'io'r' belt-con nectedto the shaft. shaft is? spurred-acts shaft by keys 2H for rotation with-the shaft; fiiIn addition, the. pulleys may Joe slid alongtheshaft, fkeys riding splines lfl; The pulleys areprovided each with 'afloatingfcollarl tpositi'onedin a groove in theihub ofthepu liey, -'iii'-his collar isglinked to' its jaspective cutting tool headby arm secured tothe collar-in-sleeve fl and to indicated;

l'verticalsection of the ennathe head in sieeve-2 5. Movementof the headI-to the right or' left carries=-with-it the driving' puiiey on the shaft sothat at all times-the'driv-ing'pu-l; ley and the drivenapuilev' are in operative align- -ment. "The driving 'puiley Wa' drives the driven 'pulleyilii through 'belt' 21. The-driven pulley; "in turn, rotates thefcutterflfl'through shaft 2:9{journailed-in fthecutting-tool headstock I i For'the cuttine'of ?hingeclearanceslotsin t'he edge of a plank, 'awork feed-table- '38- is provided see- Fig. '2 ion-exploded: view). Slots 34 which the bases 4,0: the cutting tool head stocks handed threads 1 and 'left-hande'd threads '8"-is fittedto ma-ting' threads in 'the' uprights of the cutting tool headstocksand-isjournalle'd in been ings-9-wel-ded to the ends-of surface plate 2. The right hand endcf the screw is provided with a crank It. This arrangement provides-"for 1ongi tud-inal adjustment =-of thetwo cutter heads; Turning :thescrew one direction: causes-"both" cutting tooli'heads simultaneously to' approach the I center of the machine due to -the- .opposi'ngv pitches are-formed in tiie ta' blee-and g uid'es '32; mounted or later-at adjustment, are providedwitheolts securing'the guides to the tabl'ei 'mie table: is mounted in brackets $lebelted 'to---ti fe bed I, as shown, the brackets being pnovided wsith sliding keepers I sewhichengage the" ends of the table I t'o -hold it to-the h-rackets. Thetableisremovable -f-i 'omthe bracket-s to: permit the alternative use Figafiias mll I ofithe work holding cnadle shownin beeXpIained'heneinaEter. 1

o i operation, vforzcutti-ng"hinge cleamance'a slots, I the table 311 is fitted to bnaclietsi ,Mi-Jand the v -g-1iidest32 are adjusted to the width orene board to lo e-lslottedi' The-cutting wheels areset-the re "quie ed-distance apar t by sorew fi wl'ii'ohi's then clamped invpla'ce: The- Cuttefls airelset' n. motion b'y applying -power to th" 'Sfi-tdbeslbtted is: rested on the taibl'eandifed lv hand against the cutters as shown in Fig; 4; --A

spaced the required distance apart.

bearings 38 on arms 39 welded to the bed I, and,

swings about the rod 31. The cradle is provided with side members 4%], a top transverse vbani; i.

Twoslidersfis are attached to thebars 42 by hearing 035752451 and two transverse slider bars 42 which are clamped by set screws 45 tofiX the sliders in position. These sliders are adjusted to engage the ends of a board to be s1otted,,the lower corner of the board resting in adjustable "cup 46 and the upper part of the boardqbeing engaged by lugs 41 on the slider. The cups. 46 arelvertically adjustable in slots 48 and are maintained in posi- M tion by nuts AQengaging screws passing through the slots and attached'to the'cups. 'This adjustfi 'c Permits various sized boards to be slotted on'the machine; I i

In operation, for the cutting of spaced circular slots in a board, the table 39 is removed from the machine. The cradle, mounted on its axle, f is thus free to be rotated between thetable brackets and moved adjacent thecutting wheels. A board is positionedin the cradle sliders and the cradle is then rotated to force the board in contact with the cutting ,wheels, which have previouslyjbeen Pressure is 1 maintainedto press the board against the cuttin wheels until the slots'have been cut to the desired depth.

-,We'claim:. A e

' 1. A machine fforcutting grooves in planks and the like which comprises an elongatedbed', a pair of headstocks slidably mounted on said bed for of head stocks slidably mounted on, said bed for movement'longitudinally of said bed," a cutting tool carried by each of said stocks, a longitudinal screw rotatably mounted on said bed and having 'Iright handed threads engaging a complementary screwelement of one of said stocks and having 1 left 'handed threads engaging a, complementary screw element of the other of said stocks, means forfrotating said screw, a drive shaft having a driving element for each of said cutting tools slidable on said shaft, a driven element carried by each of said stockseactuating a cutting tool, means 7 xlinkingeach' of said driving elements to its associated head stock for longitudinal movement therewith to maintain driving alignment between respective ;driving"and driven elements, and a table forsupportin work tobe grooved for move- I ment against said tools.

movement.longitudinallyof said bed, acuttin g tool carried by each of said stocks, a longitudinal screw rotatably mounted on saidbed and having right handed threads engagingacomplementary .screwelement of one of saidstocks and havin lefti handed threads engaging a complementary screw element f the other of said stocks, means for rotating said screw, a drive shaft having a driving element for each of said cutting tools slidable on said shaft, a driven element carriedby ,each of said stocks actuating a cutting tool, means hnking each of said driving elements to its associated head stock for longitudinalmovement therewith to maintain driving alignment between respective driving and driven elements, and means for supporting. Work to be grooved for movement against said tools; I

v 2. Amachinefor cutting groovesin planksand the like which comprises an elongated bed, a pair of head stocks slidably mounted ,on said bed ior movement longitudinally :,of said, bed, a cutting toolcarried by each of. said stocks, a longitudinal screw rotatably mounted on said bedand havin right handed threads engaging a complementary tools slidable on said shaft, adrivenelement carriedby each of said stocks actuating acutting tool, means linking each of said driving-elements ,to its associated :head stock for longitudinal .4. Ama'chine for cutting groovesjin planks and the like which comprises" an elongated bed, a pair of head 'stocks"slidably mounted on said bedfor movement longitudinallyoffsaidbed, a cutting tool carriedby each of said stocks, a longitudinal screwrotatably' mounted .on said bed andhaving right handed threads engaging a. complementary screw Yele nent of one of said stocks and having jleit handed threads engaging a complementary screwelement of the other of said stocks, means.v for.,.,rotating said screw,. a driveshaft'v having a driving element for each of said cutting :tools' slidablei onsaid shaft, a drivenelernent carried by each of' said stocks actuating a cutting r001, means linking each of said driving elements to its' associa ted head stock for ilongitudinalmovement therewith to maintain driving alignment between respective" driving and driven elements, and apivoted cradle for supporting work to-be grooved for movement against said tools; f i. h

- 5. Amachine for cutting grooves in'planks and the like comprising an elongated bed, a pair of head stocks slida'bly' mounted on said "bed for movement 'longitudinally of 'said' bed, a cutting wheel carried by each of said stocks,"a driven pulley connected toeach' ofs'aid 'cutting'wheels, a longitudinalfscrewlrotatably mountedon said bed and having right-hande'dthreads engaging a complementary screwelement'of one of said stocks "and having left-handed threads engaging a complementary screw element of the. other'of said-stocks, mean'sffor rotating jsaidj screw: a 'spli'nedj driveshaft, 'a pair ,of driving pulleys slidably mounted cnsa'idshaft' and keyed to said spline, a collar carriedby jeaChLoI-Said driving pulleys, a. rigid armilinking each of said collars to a'co'rrespondin'g head stock, and means for supporting work'tojbe grooved for inovement againstsaid.tools} D q 8. A machine for cutting grooves in planks and the like comprising an elongated bed, apair of head stocks slidablymountedgon said bed for movement longitudinally orsaid bed, a cutting wheel carried by: each-ofsaid stocks, a driven pulley connected to each of' said cutting wheels, a longitudinal 'screw rotatably, mounted on said bed and havingright-handed threads; engaging a. complementary screw. element-of ;.one of said stocks and having left-handed threads engaging a complementary screw element of the other of said stocks, means for rotating said screw, ad-

justable clamping means for preventing rotation of said screw, a splined drive shaft, a pair of driving pulleys slidably mounted on said shaft pulleys, a rigid arm linking each of said collars to a corresponding head stock, and a table for and keyed to said spline, a collar carried by each v of said driving pulleys, a rigid arm linking each of said collars to a corresponding head stock, and means for supporting work to be grooved for movement against said tools.

'7. A machine for cutting grooves in planks and the like comprising an elongated bed, a pair of head stocks slidably mounted on said bed for movement longitudinally of said bed, a cutting Wheel carried by each of said stocks, a driven pulley connected to each of said cutting wheels,

a longitudinal screw' rotatably mounted on said bed and having right-handed threads engaging a complementary screw element of one of said stocks and having left-handed threads engaging a complementary screw element of the other of said stocks, means for rotating said screw, a splined drive shaft, a pair of driving pulleys slidably mounted on said shaft and keyed to said spline, a collar carried by each of said driving supporting work to be grooved for movement against said tools. 8. A machine for cutting grooves in planks an the like comprising an elongated bed, a pair of head stocks slidably mounted on said bed for movement longitudinally ofsaid bed, a cutting I wheel carried by each of said stocks, a driven 'splined drive shaft, a pair of driving pulleys slidably mounted on said shaft and keyed to said spline, a collar carried by each of said driving pulleys, a'rigid arm linking each of said collars to a corresponding head stock, and a pivoted cradle for supporting work to be grooved for movement against said tools.

ROBERT H. NOBLE. ALVIN A. CAMPBELL. 

